Cutting tool insert



FIG. 1 is a top and left side perspective view of a cutting tool insert showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is an elevational view, taken from the right side;

FIG. 4 is a bottom plan view; and

FIG. 5 is a cross sectional view taken along line V--V in FIG. 2, thereof. 

The ornamental design for a cutting tool insert as shown and described. 